DOC AIRBUS | AMM A320FInstallation of the Mixer Flap Actuator
TASK 21-51-52-400-001-A
Installation of the Mixer Flap Actuator
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 21-51-52-860-050-A
Subtask 21-51-52-420-050-B
Subtask 21-51-52-410-050-A
[Rev.10 from 2021]
2026.04.05 10:34:31 UTC
Installation of the Mixer Flap Actuator
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
FIN: 20HB
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03GBB1) | Synthetic Oil base Grease-General Purpose Clay Thickened - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 131NW, 131PW, 825 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 11 | SEAL | AIPC 21-21-02-43-055 |
| 11 | SEAL | AIPC 21-21-82-40-240 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 21-51-00-710-002-A | Operational Test of the Flow Control and Indicating System |
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 25-54-12-000-001-A | Removal of the Forward Cargo-Compartment Partition |
| TASK 25-54-12-400-001-A | Installation of the Forward Cargo-Compartment Partition |
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
Mixer Unit-Flap ActuatorSubtask 21-51-52-860-050-A
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) On the overhead panel, on AIR COND panel 30VU:
1 The APU BLEED pushbutton switch is released (the ON legend is off).
2 The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are released (the OFF legends are on).
3 The WARNING NOTICE(S) is in position to tell persons not to operate these pushbutton switches.
(c) On the HP and the LP ground connectors the WARNING NOTICE(S) is in position to tell persons not to supply the ground air.
(d) The ACCESS PLATFORM 2M (6 FT) is in position at the FWD cargo compartment door 825.
(f) Access panels 131PW and 131NW are removed (Ref. AMM TASK 25-54-12-000-001).
Subtask 21-51-52-865-051-A (1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) On the overhead panel, on AIR COND panel 30VU:
1 The APU BLEED pushbutton switch is released (the ON legend is off).
2 The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are released (the OFF legends are on).
3 The WARNING NOTICE(S) is in position to tell persons not to operate these pushbutton switches.
(c) On the HP and the LP ground connectors the WARNING NOTICE(S) is in position to tell persons not to supply the ground air.
(d) The ACCESS PLATFORM 2M (6 FT) is in position at the FWD cargo compartment door 825.
WARNING:
DO NOT OPEN OR GO NEAR PRESSURE-SEALED DOORS WHEN THE AIRCRAFT IS PRESSURIZED.
A PRESSURE-SEALED DOOR THAT OPENS WHEN THE AIRCRAFT IS PRESSURIZED:
(e) The FWD cargo compartment door 825 is open (Ref. AMM TASK 52-30-00-860-001). - WILL CAUSE EXPLOSIVE DECOMPRESSION.
- CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAUSE DAMAGE TO THE AIRCRAFT OR EQUIPMENT.
(f) Access panels 131PW and 131NW are removed (Ref. AMM TASK 25-54-12-000-001).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/FLOW/MIXER/FLAP | 3HB | V22 |
| 122VU | AIR COND/ZONE TEMP CTL/28VDC/SYS2 | 4HK | V20 |
| 122VU | AIR COND/ZONE TEMP CTL/28VDC/SYS1 | 3HK | V19 |
| 122VU | AIR COND/ZONE TEMP CTL/115VAC/SYS2 | 2HK | V18 |
| 122VU | AIR COND/ZONE TEMP CTL/115VAC/SYS1 | 1HK | V17 |
| ** ON A/C ALL | |||
| 122VU | AIR COND/RECIRC FAN/R/CTL | 11HG | W20 |
| 122VU | AIR COND/RECIRC FAN/R/SPLY | 3HG | W18 |
| 122VU | AIR COND/RECIRC FAN/L/CTL | 2HG | X20 |
| 122VU | AIR COND/RECIRC FAN/L/SPLY | 1HG | X18 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
Subtask 21-51-52-420-050-B
A. Installation of the Mixer Flap Actuator
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Remove the protective covers from the sleeve (7), the mixer unit (14) and the mixer-flap actuator housing (9).
(3) Clean the component interfaces and the adjacent area.
(4) Do a visual inspection of the component interfaces and the adjacent area.
(5) Make sure that the seal (11) is in good condition.
(6) If necessary, replace the AIPC 21-21-02-43-055 SEAL (11) or AIPC 21-21-82-40-240 SEAL (11).
(7) Apply a small quantity of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the geared part of the shaft (15).
(8) Make sure that the shutter valve (2) and the actuator manual-operating arm (1) are in the closed position.
(9) Put the mixer flap actuator (6) in position on the shaft (15).
(10) Install the washers (5) and the bolts (4).
(11) Install the seal (11) on the mixer unit (14).
(12) Put the mixer-flap actuator housing (9) in position on the mixer unit (14).
(13) Install the bolts (10), the washers (12) and the nuts (13).
(15) Install the clamp (8) on the sleeve (7).
(16) Make sure that the end of the sleeve (7) is between the coloured marking lines on the mixer-flap actuator housing (9).
(17) Tighten the clamp (8).
(18) Remove the CAP-BLANKING from each electrical connector and receptacle.
(20) Connect the electrical connector (3).
(21) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-51-52-865-052-A (1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Remove the protective covers from the sleeve (7), the mixer unit (14) and the mixer-flap actuator housing (9).
(3) Clean the component interfaces and the adjacent area.
(4) Do a visual inspection of the component interfaces and the adjacent area.
(5) Make sure that the seal (11) is in good condition.
(6) If necessary, replace the AIPC 21-21-02-43-055 SEAL (11) or AIPC 21-21-82-40-240 SEAL (11).
(7) Apply a small quantity of Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the geared part of the shaft (15).
(8) Make sure that the shutter valve (2) and the actuator manual-operating arm (1) are in the closed position.
(9) Put the mixer flap actuator (6) in position on the shaft (15).
(10) Install the washers (5) and the bolts (4).
(11) Install the seal (11) on the mixer unit (14).
(12) Put the mixer-flap actuator housing (9) in position on the mixer unit (14).
(13) Install the bolts (10), the washers (12) and the nuts (13).
NOTE: Do not tighten the nuts (13) and the bolts (10) too much. This can cause damage to the seal (11).
(14) Put the sleeve (7) in position on the mixer-flap actuator housing (9). (15) Install the clamp (8) on the sleeve (7).
(16) Make sure that the end of the sleeve (7) is between the coloured marking lines on the mixer-flap actuator housing (9).
(17) Tighten the clamp (8).
(18) Remove the CAP-BLANKING from each electrical connector and receptacle.
CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
(19) Make sure that all the electrical connections are clean and in the correct condition.(20) Connect the electrical connector (3).
(21) Make sure that the work area is clean and clear of tools and other items.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-51-52-710-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/FLOW/MIXER/FLAP | 3HB | V22 |
| 122VU | AIR COND/ZONE TEMP CTL/28VDC/SYS2 | 4HK | V20 |
| 122VU | AIR COND/ZONE TEMP CTL/28VDC/SYS1 | 3HK | V19 |
| 122VU | AIR COND/ZONE TEMP CTL/115VAC/SYS2 | 2HK | V18 |
| 122VU | AIR COND/ZONE TEMP CTL/115VAC/SYS1 | 1HK | V17 |
| ** ON A/C ALL | |||
| 122VU | AIR COND/RECIRC FAN/R/CTL | 11HG | W20 |
| 122VU | AIR COND/RECIRC FAN/R/SPLY | 3HG | W18 |
| 122VU | AIR COND/RECIRC FAN/L/CTL | 2HG | X20 |
| 122VU | AIR COND/RECIRC FAN/L/SPLY | 1HG | X18 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
C. Do the operational test of the flow control and indicating system (Ref. AMM TASK 21-51-00-710-002).
5. Close-upSubtask 21-51-52-410-050-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panels 131PW and 131NW (Ref. AMM TASK 25-54-12-400-001).
(3) Close the FWD cargo compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).
Subtask 21-51-52-862-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panels 131PW and 131NW (Ref. AMM TASK 25-54-12-400-001).
(3) Close the FWD cargo compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).